DCT has tendency to produce higher IOP results

Article

Intraocular pressure (IOP) is higher when measured by dynamic contour tonometry (DCT) rather than Goldmann applanation tonometry (GAT).

Intraocular pressure (IOP) is higher when measured by dynamic contour tonometry (DCT) rather than Goldmann applanation tonometry (GAT), according to a study published in the Journal of Glaucoma.

An investigation led by Dr Guy Regev, Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, USA, assessed the central corneal thickness (CCT) and GAT as well as DCT measurements in 116 open-angle glaucoma patients. GAT and DCT were evaluated in a randomized order, along with CCT in a single study visit. The agreement between GAT and DCT measurements were evaluated using Bland-Altman plots and the influence of CCT on IOP measurements was evaluated by multivariate regression analysis.

The findings revealed that using DCT to measure IOP was significantly higher than in GAT. There was a strong positive correlation between DCT and GAT IOP measurements in open-angle glaucoma patients. The Bland-Altman data demonstrated a variance on the amount of disagreement between the IOP measurement methods.

Both GAT and DCT measurements were not influenced by CCT. The results suggest there are alternative factors other than CCT as to why DCT produces significantly higher IOP results.

Newsletter

Join ophthalmologists across Europe—sign up for exclusive updates and innovations in surgical techniques and clinical care.

Recent Videos
Christine Curcio, PhD, of the University of Alabama at Birmingham Heersink School of Medicine, shares histology update and revised nomenclature for OCT with Sheryl Stevenson of the Eye Care Network and Ophthalmology Times
SriniVas R. Sadda, MD, FARVO, shares key points from his retina presentation at the International SPECTRALIS Symposium
Robert Sergott, MD, describes fluorescence lifetime imaging ophthalmoscopy (FLIO) and the International SPECTRALIS Symposium – And Beyond (ISS) in Heidelberg, Germany.
Rayaz Malik, MBChB, PhD, a professor of medicine at Weill Cornell Medicine - Qatar, spoke with Ophthalmology Times Europe about his presentation. It's titled "An eye on neurodegenerative diseases: Challenging the dogma" at the International SPECTRALIS Sympsoium. In conversation with Hattie Hayes, Ophthalmology Times Europe
Anat Loewenstein, MD, describes her presentation on remote imaging for age-related macular degeneration and geographic atrophy at the International SPECTRALIS Symposium, in conversation with Hattie Hayes of Ophthalmology Times Europe
Tyson Brunstetter, OD, PhD, a US Navy Aerospace Optometrist at the NASA Johnson Space Center in Houston, Texas, shares key takeaways from his keynote at the International SPECTRALIS Symposium (ISS)
Rayaz Malik, MBChB, PhD, shares his presentation, titled An eye on neurodegenerative diseases: Challenging the dogma, at this year's International SPECTRALIS Symposium
At the Retina World Congress, Siegfried Priglinger, MD, speaks about ensuring the best outcomes for preschool-aged patients
At the 2025 ASCRS meeting, Robert Ang, MD said small aperture IOLs can benefit all patients, especially those with complex corneas or who have undergone previous corneal refractive surgery
Viha Vig, MBChB graduate student at the University of Auckland, New Zealand, discusses her poster presentation on the relationship between mitochondiral disease, Alzheimer disease, and other types of dementia.
© 2025 MJH Life Sciences

All rights reserved.